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On the measurement of solute concentrations in 2-D flow tank experiments
2-D flow tank experiments photometric method
2009/5/4
In this study we describe and compare photometric and resistivity measurement methodologies to determine solute concentrations in porous media flow tank experiments. The first method is the photometri...
Modelling the effects of climate on long-term patterns of dissolved organic carbon concentrations in the surface waters of a boreal catchment
Dissolved organic carbon artificial neural networks
2009/4/29
Dissolved organic carbon concentrations ([DOC]) in surface waters are increasing in many regions of Europe and North America. These increases are likely driven by a combination of changing climate, r...
Impact of changing DOC concentrations on the potential distribution of acid sensitive biota in a boreal stream network
acid sensitive biota potential distribution
2009/4/29
DOC concentrations have increased in many surface waters in Europe and North America over the past few decades. As DOC exudes a strong influence on pH this DOC increase could have detrimental effects ...
Climate control on sulphate and nitrate concentrations in alpine streams of Northern Italy along a nitrogen saturation gradient
surface waters nitrate concentrations sulphate nitrogen saturation gradient
2009/4/29
The role of meteorology, hydrology and atmospheric deposition on the temporal pattern of SO4 and NO3 concentrations was investigated for three streams draining alpine catchments in Northern Italy.
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Effect of Permanent Hypoinsulinemia on Appetite, Performance, Carcass Composition, Blood Metabolites and Leptin Concentrations in Lambs
Hypoinsulinemia Leptin Appetite Performance Carcass Lamb
2016/4/29
Insulin has crucial roles in energy metabolism in all mammals but has been less studied in ruminants. An experiment was conducted to investigate the effects of hypoinsulinemia induction on appetite, p...
Concentrations of higher dicarboxylic acids C5–C13 in fresh snow samples collected at the High Alpine Research Station Jungfraujoch during CLACE 5 and 6
higher dicarboxylic acids fresh snow samples High Alpine Research Station Jungfraujoch
2009/3/31
Samples of freshly fallen snow were collected at the high alpine research station Jungfraujoch (Switzerland) in February and March 2006 and 2007, during the Cloud and Aerosol Characterization Experime...
Modelling trends in OH radical concentrations using generalized additive models
Modelling trends OH radical concentrations generalized additive models
2009/3/31
During the TORCH campaign a zero dimensional box model based on the Master Chemical Mechanism was used to model concentrations of OH radicals. The model provided a close overall fit to measured concen...
Nitrogen concentrations in a small Mediterranean stream: 1. Nitrate 2. Ammonium
Nitrogen concentrations Nitrate Ammonium
2009/3/17
The importance of storm frequency as well as the groundwater and hyporheic inputs on nitrate (NO3-N) and ammonium (NH4-N) levels in stream water were studied in a small perennial Mediterranean catchme...
Nutrient concentrations and fluxes for podzolic and gley soils at Plynlimon, mid-Wales: implications for modelling inorganic nitrogen and phosphorus in upland UK environments
Plynlimon Hafren Hore streams nitrate ammonium
2009/3/17
The effect of felling on stream nitrate, ammonium and soluble reactive phosphate (SRP) concentrations is examined for acidic and acid sensitive Sitka Spruce afforested catchments with podzolic and gle...
Sensitivity of aerosol concentrations and cloud properties to nucleation and secondary organic distribution in ECHAM5-HAM global circulation model
aerosol concentrations cloud properties secondary organic distribution ECHAM5-HAM global circulation model
2009/3/13
The global aerosol-climate model ECHAM5-HAM was modified to improve the representation of new particle formation in the boundary layer. Activation-type nucleation mechanism was introduced to produce o...
Measurements of OH and HO2 concentrations during the MCMA-2006 field campaign – Part 1: Deployment of the Indiana University laser-induced fluorescence instrument
OH HO2 MCMA-2006 field campaign laser-induced fluorescence instrument
2009/3/13
Measurements of tropospheric hydroxyl (OH) and hydroperoxy (HO2) radicals were made during the MCMA (Mexico City Metropolitan Area) field campaign as part of the MILAGRO (Megacity Initiative: Local an...
Uncertainty in global CCN concentrations from uncertain aerosol nucleation and primary emission rates
global CCN concentrations uncertain aerosol nucleation emission rates
2009/3/13
The indirect effect of aerosols on climate is highly uncertain and limits our ability to assess anthropogenic climate change. The foundation of this uncertainty is uncertainty in the number of cloud c...
Attribution of projected changes in summertime US ozone and PM2.5 concentrations to global changes
projected changes summertime US ozone PM2.5 concentrations global changes
2009/3/13
The impact that changes in future climate, anthropogenic US emissions, background tropospheric composition, and land-use have on summertime regional US ozone and PM2.5 concentrations is examined throu...
Coherent response of lakes in Ontario, Canada to reductions in sulphur deposition: the effects of climate on sulphate concentrations
Atmospheric deposition lake recovery temporal trends
2009/3/12
Sulphate deposition in south-central Ontario declined between 1976 and 2000 by more than 50%, whereas lake sulphate (SO42–) concentrations decreased by, on average, only half as much. To investigate t...
Modelling sulphate stream concentrations in the Black Forest catchments Schluchsee and Villingen
sulphate release organic S mineralisation
2009/3/12
The sulphate (SO4) released by mineralisation and desorption from soil can play an important role in determining concentrations of SO4 in streams. The MAGIC model was calibrated for two catchments in ...